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Use of Optimization Modeling to Assess the Effect of Timber and Carbon Pricing on Harvest Scheduling, Carbon Sequestration, and Net Present Value of Eucalyptus Plantations
timber harvest scheduling mixed-integer programming harvest age carbon sequestration
2023/12/19
Quantifying the impact of carbon (C) and timber prices on harvest scheduling and economic returns is essential to define strategies for the sustainable management of short-rotation plantations so that...
Land Cover and Land Use Change Decreases Net Ecosystem Production in Tropical Peatlands of West Kalimantan, Indonesia
deforestation forest logging tropical climate peat swamp forests oil palm estate NEP
2023/12/8
Deforested and converted tropical peat swamp forests are susceptible to fires and are a major source of greenhouse gas (GHG) emissions. However, information on the influence of land-use change (LUC) o...
Assessment of Drought Impact on Net Primary Productivity in the Terrestrial Ecosystems of Mongolia from 2003 to 2018
terrestrial ecosystem NDVI BEPS NPP drought vegetation response
2023/12/8
Drought has devastating impacts on agriculture and other ecosystems, and its occurrence is expected to increase in the future. However, its spatiotemporal impacts on net primary productivity (NPP) in ...
Does the net primary production converge across six temperate forest types under the same climate?
Carbon allocation Elemental stoichiometry Net primary production Nutrient availability Temperate forest
2024/3/8
Quantifying net primary production (NPP) and its allocation is essential for understanding and modeling the carbon (C) cycling in forest ecosystems. We used biometry-based measurements to examine the ...
动物卫生风险是指动物传染病、寄生虫病病原体、有毒有害物质随进境动物、动物产品、动物遗传物质、动物源性饲料、生物制品和动物病理材料传入的可能性及其对农牧渔业生产、人体健康和生态环境造成的危害。动物卫生风险分析是指危害因素确定、风险评估、风险管理和风险交流的过程。近年来，随着动物安全事件频繁发生，严重影响了中国畜牧业的健康持续的发展，极大的威胁着国家公共卫生安全，成为了国内外共同关注的焦点。动物卫生风...
Effect of genotype on heat production and net energy value of a corn-soybean meal-based diet fed to growing pigs
energy utilisation genotype growing pigs heat production net energy
2015/10/9
The net energy (NE) system takes into account the metabolic utilisation of energy and has been proposed as a superior system for characterising the energy value of feeds. In growing pigs, the ineffici...
Induction and advancement of ovulation in wild Arctic grayling (Thymallus arcticus arcticus) using D-Tle6,Pro9,NEt-mGnRHa Lecirelin
salmonids reproduction single injection double injection GnRHa
2015/6/24
The effect of single and double injections of D-Tle6,Pro9,NEt-mGnRHa (Supergestran®) on advancement and induction of ovulation in Arctic grayling was assessed. Sexually mature wild Arctic graylin...
Nutritional and net energy value of fermented olive wastes in rations of lactating ewes
fermented olive wastes Chios ewes milk yield milk composition
2015/6/4
In an experiment with 18 lactating Chios ewes, the replacement of barley grain, wheat grain, sugar beet pulp and lucerne meal with fermented olive wastes (FOW), maize grain and soybean meal was used t...
Growth Performance of Early Finishing Gilts as Affected by Different Net Energy Concentrations in Diets
French Net Energy System Growth Performance Net Energy Concentration in Diets
2016/5/19
The objectives of the current experiment were to study the response of the growth performance of early finishing gilts to different net energy (NE) concentrations in diets, and to compare the NE value...
Can plant lit ter af fect net prima r y production of a typical stepp e in Inner Mongolia?
Growing degree-days Leymus chin ensis Litter addition Litter removal Soil moisture Stipa grandis
2015/2/4
Question: Litter (dead leaves or stems) affects production by conserving soil moisture. However, that role is not clear for grasslands where most precipitation falls during the growing season when the...
The Net Energy Values of Corn, Dried Distillers Grains with Solubles and Wheat Bran for Laying Hens Using Indirect Calorimetry Method
Corn Dried Distillers Grains with Solubles Indirect Calorimetry Laying Hens Net Energy Wheat Bran
2016/5/16
The present study was conducted to estimate the NE values of corn, dried distillers grains with solubles (DDGS) and wheat bran (WB) for laying hens based on an indirect calorimetry method and nitrogen...
基于.NET的池塘养殖数字化管理系统
池塘养殖 数字化 NET 系统架构
2014/4/5
为了促进水产养殖健康发展，基于.NET Framework技术作为开发环境，Access作为后台数据库开发了一套池塘养殖数字化管理系统，并对系统进行了硬件架构和软件设计。硬件架构由水质监测与管理系统、自动投饵系统和投喂决策系统组成。根据测量的水温、溶氧量和酸碱度等信息，结合鱼类生长需要形成合理的投喂量和最佳的投喂时间，实现池塘养殖数字化管理。应用试验表明，系统能够对养殖水体进行实时监测和控制，达到...
自从禽流感2003年在中国大陆突然袭来，人们对蛋禽食品的安全性要求越来越高。蛋禽企业为了生产管理的标准化、网络化和信息化，也急需一种便捷的办公管理系统。鉴于此，一个基于ASP.NET技术和组件技术的蛋鸡健康养殖管理信息系统应运而生。该系统选用Windows 2003 Server 操作平台、SQL Server 2000 数据库、ASP.NET开发环境和C#开发语言，采用了三层体系结构。系统主要包...
基于.NET的池塘养殖数字化管理系统
池塘养殖 数字化 .NET 系统架构
2014/6/10
为了促进水产养殖健康发展，基于.NET Framework技术作为开发环境，Access作为后台数据库开发了一套池塘养殖数字化管理系统，并对系统进行了硬件架构和软件设计。硬件架构由水质监测与管理系统、自动投饵系统和投喂决策系统组成。根据测量的水温、溶氧量和酸碱度等信息，结合鱼类生长需要形成合理的投喂量和最佳的投喂时间，实现池塘养殖数字化管理。应用试验表明，系统能够对养殖水体进行实时监测和控制，达到...
Daily Feed Intake, Energy Intake, Growth Rate and Measures of Dietary Energy Efficiency of Pigs from Four Sire Lines Fed Diets with High or Low Metabolizable and Net Energy Concentrations
Pig Growth Performance Feed Efficiency Dietary Energy
2016/5/9
A trial was conducted to: i) evaluate the BW growth, energy intakes and energetic efficiency of pigs fed high and low density diets from 27 to 141 kg BW, ii) evaluate sire line and sex differences whe...